Casio fx-CG10 Advanced Operation Manual page 22

Sample Solution—Motorcycles and Helmets (continued)
h. Write a few statements summarizing the general trends in the number of lives
saved for each of these protective devices since 1990.
Answers may vary, but students should use mathematics to support their
statements.
i. The following table includes the number of lives saved by child restraints
from 1995 to 2007. Do the data appear to have a linear trend? What is the
correlation coefficient of a linear regression analysis?
To create a scatterplot using the calculator:
Press
mode.
First, encourage the students to label each column. To enter subtitles
in, make sure the cursor is in the S S UB row, press
Alpha Lock. This allows you to access all letters in red. When finished
inputting the subtitle, press
each value.
Graph the data as ordered pairs by pressing
(SET) to set up Graph 1 .
Press
(Scatter). This indicates that you want to create a Scatterplot in
Graph 1.
Fostering Advanced Algebraic Thinking with Casio Technology
to return to the Main Menu, then
(GRAPH1) and then arrow down to G G raph Type and press
to access the Statistics
. Then, enter the data, pressing
for A-LOCK,
after
(GRAPH) , then press